Finally got around to tying a Realeel with the Unique Hair. Picked up some "smoke" to blend with the white to tone it down.

First impression was that it was just a finer superhair.
The fibers are actually about the same diameter as Superhair. But there is a blend of straight and wavy fibers and the amplitude of the waves is less than the Super. The end result is a limper, less coarse material that just feels finer. Comparing the white Unique to the white super - the super fibers are translucent and the unique are opaque.